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Citrus2011 [14]
3 years ago
13

Element X is a radioactive isotope such that every 66 years, its mass

Mathematics
1 answer:
LenKa [72]3 years ago
3 0

Answer:

194.5315427 grams

Step-by-step explanation:

The half-life of element x would be 66 years. So, after 20 years you would have:

.5^(20/66) x 240=0.810548 x 240

        =194.5315427 grams of the element left ......

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If LN=54 and LM=31, find MN
kirza4 [7]
In this item, it is unfortunate that a figure, drawing, or illustration is not given. To be able to answer this, it is assumed that these segments are collinear. Points L, M, and N are collinear, and that L lies between MN. 

The length of the whole segment MN is the sum of the length of the subsegments, LN and LM. This can be mathematically expressed,
             LN + LM = MN

We are given with the lengths of the smalller segments and substituting the known values,
             MN = 54 + 31
            MN = 85

<em>ANSWER: MN = 85</em>
7 0
3 years ago
Read 2 more answers
Find ( f - g)(x).<br><br> f (x) = -2x2 - 2x - 3 and g(x) = 3x2 - 4x - 4
Kruka [31]

Answer:

\large\boxed{(f-g)(x)=-5x^2+2x+1}

Step-by-step explanation:

(f-g)(x)=f(x)-g(x)\\\\\text{We have}\ f(x)=-2x^2-2x-3\ \text{and}\ g(x)=3x^2-4x-4.\\\\\text{Substitute:}\\\\(f-g)(x)=(-2x^2-2x-3)-(3x^2-4x-4)\\\\(f-g)(x)=-2x^2-2x-3-3x^2+4x+4\qquad\text{combine like terms}\\\\(f-g)(x)=(-2x^2-3x^2)+(-2x+4x)+(-3+4)\\\\(f-g)(x)=-5x^2+2x+1

3 0
3 years ago
What is the solution for xsquared= 64
asambeis [7]

Answer:

64 rooted is D. 8

6 0
3 years ago
Find the product.
natka813 [3]

Answer:

C:) 17/3

Step-by-step explanation:

Simplify the following:

((3 + 2/5)×5)/3

((3 + 2/5)×5)/3 = ((3 + 2/5)×5)/3:

((3 + 2/5)×5)/3

Put 3 + 2/5 over the common denominator 5. 3 + 2/5 = (5×3)/5 + 2/5:

((5×3)/5 + 2/5 5)/3

5×3 = 15:

((15/5 + 2/5)×5)/3

15/5 + 2/5 = (15 + 2)/5:

((15 + 2)/5×5)/3

15 + 2 = 17:

(17/5×5)/3

17/5×5 = (17×5)/5:

((17×5)/5)/3

((17×5)/5)/3 = (17×5)/(5×3):

(17×5)/(5×3)

(17×5)/(5×3) = 5/5×17/3 = 17/3:

Answer:  17/3

5 0
3 years ago
HELPPPP PLSSSS Which is true about the polynomial ? It is a binomial with a degree of 2. It is a binomial with a degree of 3. It
zysi [14]

i am not getting it what are you asking

8 0
3 years ago
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